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CHXI11:THE P-BLOCK ELEMENTS

316294 Thiosulphate reacts differently with iodine and bromine in the reactions given below:
$2 S_{2} O_{3}^{2 -} + I_{2} \to S_{4} O_{6}^{2 -} + 2 I^{-}$
$S_{2} O_{3}^{2 -} + 5 {Br}_{2} + 5 H_{2} O \to 2 {SO}_{4}^{2 -} + 10 {Br}^{-} + 10 H^{+}$
Which of the following statement justifies the above dual behaviour of thiosulphate?

1 Bromine is a weaker oxidant than iodine.

2 Thiosulphate undergoes oxidation by bromine and reduction by iodine in these reactions.

3 Bromine undergoes oxidation and iodine undergoes reduction in these reactions.

4 Bromine is a stronger oxidant than iodine.

Explanation:

${Br}_{2}$ oxidises $S_{2} O_{3}^{2 -} (+ 2 O . S)$ to
${SO}_{4}^{2 -} (+ 6$ O.S. $)$ while $I_{2}$ oxidises
$S_{2} O_{3}^{2 -} (+ 2$ O.S $)$ to $S_{4} O_{6}^{2 -} (+ 2.5$ O.S. $)$ ,
hence ${Br}_{2}$ is stronger oxidant than iodine. So, the correct option is (4).

JEE Main - 2024

CHXI11:THE P-BLOCK ELEMENTS

316295 Assertion :
$F_{2}$ has high reactivity.
Reason :
$F - F$ bond has low bond dissociation enthalpy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

Explanation:

Fluorine is the most reactive among all the halogens due to its low bond dissociation enthalpy.Hence, both $A$ and $R$ are correct and Reason is the correct explanation of Assertion.

CHXI11:THE P-BLOCK ELEMENTS

316296 Assertion :
Trisilylamine is a relatively stronger base compared with trimethylamine.
Reason :
In trisilylamine, $N$ atom is $s p^{2}$ - hybridized and lone pair on $N$ is involved in back $π$ bonding

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI11:THE P-BLOCK ELEMENTS

316297 The reducing character of hydrides of group 14 elements is :

1 Maximum for

{CH}_{4}

and minimum for

{PbH}_{4}

2 Maximum for

{CH}_{4}

and minimum for

{SnH}_{4}

3 Maximum for

{PbH}_{4}

and minimum for

{SiH}_{4}

4 Maximum for

{PbH}_{4}

and minimum for

{CH}_{4}

CHXI11:THE P-BLOCK ELEMENTS

316298 Hydrides of germanium are called ____

1 Stannane

2 Plumbane

3 Germanes

4 Silane

CHXI11:THE P-BLOCK ELEMENTS

316294 Thiosulphate reacts differently with iodine and bromine in the reactions given below:
$2 S_{2} O_{3}^{2 -} + I_{2} \to S_{4} O_{6}^{2 -} + 2 I^{-}$
$S_{2} O_{3}^{2 -} + 5 {Br}_{2} + 5 H_{2} O \to 2 {SO}_{4}^{2 -} + 10 {Br}^{-} + 10 H^{+}$
Which of the following statement justifies the above dual behaviour of thiosulphate?

1 Bromine is a weaker oxidant than iodine.

2 Thiosulphate undergoes oxidation by bromine and reduction by iodine in these reactions.

3 Bromine undergoes oxidation and iodine undergoes reduction in these reactions.

4 Bromine is a stronger oxidant than iodine.

Explanation:

${Br}_{2}$ oxidises $S_{2} O_{3}^{2 -} (+ 2 O . S)$ to
${SO}_{4}^{2 -} (+ 6$ O.S. $)$ while $I_{2}$ oxidises
$S_{2} O_{3}^{2 -} (+ 2$ O.S $)$ to $S_{4} O_{6}^{2 -} (+ 2.5$ O.S. $)$ ,
hence ${Br}_{2}$ is stronger oxidant than iodine. So, the correct option is (4).

JEE Main - 2024

CHXI11:THE P-BLOCK ELEMENTS

316295 Assertion :
$F_{2}$ has high reactivity.
Reason :
$F - F$ bond has low bond dissociation enthalpy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

Explanation:

Fluorine is the most reactive among all the halogens due to its low bond dissociation enthalpy.Hence, both $A$ and $R$ are correct and Reason is the correct explanation of Assertion.

CHXI11:THE P-BLOCK ELEMENTS

316296 Assertion :
Trisilylamine is a relatively stronger base compared with trimethylamine.
Reason :
In trisilylamine, $N$ atom is $s p^{2}$ - hybridized and lone pair on $N$ is involved in back $π$ bonding

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI11:THE P-BLOCK ELEMENTS

316297 The reducing character of hydrides of group 14 elements is :

1 Maximum for

{CH}_{4}

and minimum for

{PbH}_{4}

2 Maximum for

{CH}_{4}

and minimum for

{SnH}_{4}

3 Maximum for

{PbH}_{4}

and minimum for

{SiH}_{4}

4 Maximum for

{PbH}_{4}

and minimum for

{CH}_{4}

CHXI11:THE P-BLOCK ELEMENTS

316298 Hydrides of germanium are called ____

1 Stannane

2 Plumbane

3 Germanes

4 Silane

CHXI11:THE P-BLOCK ELEMENTS

316294 Thiosulphate reacts differently with iodine and bromine in the reactions given below:
$2 S_{2} O_{3}^{2 -} + I_{2} \to S_{4} O_{6}^{2 -} + 2 I^{-}$
$S_{2} O_{3}^{2 -} + 5 {Br}_{2} + 5 H_{2} O \to 2 {SO}_{4}^{2 -} + 10 {Br}^{-} + 10 H^{+}$
Which of the following statement justifies the above dual behaviour of thiosulphate?

1 Bromine is a weaker oxidant than iodine.

2 Thiosulphate undergoes oxidation by bromine and reduction by iodine in these reactions.

3 Bromine undergoes oxidation and iodine undergoes reduction in these reactions.

4 Bromine is a stronger oxidant than iodine.

Explanation:

${Br}_{2}$ oxidises $S_{2} O_{3}^{2 -} (+ 2 O . S)$ to
${SO}_{4}^{2 -} (+ 6$ O.S. $)$ while $I_{2}$ oxidises
$S_{2} O_{3}^{2 -} (+ 2$ O.S $)$ to $S_{4} O_{6}^{2 -} (+ 2.5$ O.S. $)$ ,
hence ${Br}_{2}$ is stronger oxidant than iodine. So, the correct option is (4).

JEE Main - 2024

CHXI11:THE P-BLOCK ELEMENTS

316295 Assertion :
$F_{2}$ has high reactivity.
Reason :
$F - F$ bond has low bond dissociation enthalpy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

Explanation:

Fluorine is the most reactive among all the halogens due to its low bond dissociation enthalpy.Hence, both $A$ and $R$ are correct and Reason is the correct explanation of Assertion.

CHXI11:THE P-BLOCK ELEMENTS

316296 Assertion :
Trisilylamine is a relatively stronger base compared with trimethylamine.
Reason :
In trisilylamine, $N$ atom is $s p^{2}$ - hybridized and lone pair on $N$ is involved in back $π$ bonding

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI11:THE P-BLOCK ELEMENTS

316297 The reducing character of hydrides of group 14 elements is :

1 Maximum for

{CH}_{4}

and minimum for

{PbH}_{4}

2 Maximum for

{CH}_{4}

and minimum for

{SnH}_{4}

3 Maximum for

{PbH}_{4}

and minimum for

{SiH}_{4}

4 Maximum for

{PbH}_{4}

and minimum for

{CH}_{4}

CHXI11:THE P-BLOCK ELEMENTS

316298 Hydrides of germanium are called ____

1 Stannane

2 Plumbane

3 Germanes

4 Silane

CHXI11:THE P-BLOCK ELEMENTS

316294 Thiosulphate reacts differently with iodine and bromine in the reactions given below:
$2 S_{2} O_{3}^{2 -} + I_{2} \to S_{4} O_{6}^{2 -} + 2 I^{-}$
$S_{2} O_{3}^{2 -} + 5 {Br}_{2} + 5 H_{2} O \to 2 {SO}_{4}^{2 -} + 10 {Br}^{-} + 10 H^{+}$
Which of the following statement justifies the above dual behaviour of thiosulphate?

1 Bromine is a weaker oxidant than iodine.

2 Thiosulphate undergoes oxidation by bromine and reduction by iodine in these reactions.

3 Bromine undergoes oxidation and iodine undergoes reduction in these reactions.

4 Bromine is a stronger oxidant than iodine.

Explanation:

${Br}_{2}$ oxidises $S_{2} O_{3}^{2 -} (+ 2 O . S)$ to
${SO}_{4}^{2 -} (+ 6$ O.S. $)$ while $I_{2}$ oxidises
$S_{2} O_{3}^{2 -} (+ 2$ O.S $)$ to $S_{4} O_{6}^{2 -} (+ 2.5$ O.S. $)$ ,
hence ${Br}_{2}$ is stronger oxidant than iodine. So, the correct option is (4).

JEE Main - 2024

CHXI11:THE P-BLOCK ELEMENTS

316295 Assertion :
$F_{2}$ has high reactivity.
Reason :
$F - F$ bond has low bond dissociation enthalpy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

Explanation:

Fluorine is the most reactive among all the halogens due to its low bond dissociation enthalpy.Hence, both $A$ and $R$ are correct and Reason is the correct explanation of Assertion.

CHXI11:THE P-BLOCK ELEMENTS

316296 Assertion :
Trisilylamine is a relatively stronger base compared with trimethylamine.
Reason :
In trisilylamine, $N$ atom is $s p^{2}$ - hybridized and lone pair on $N$ is involved in back $π$ bonding

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI11:THE P-BLOCK ELEMENTS

316297 The reducing character of hydrides of group 14 elements is :

1 Maximum for

{CH}_{4}

and minimum for

{PbH}_{4}

2 Maximum for

{CH}_{4}

and minimum for

{SnH}_{4}

3 Maximum for

{PbH}_{4}

and minimum for

{SiH}_{4}

4 Maximum for

{PbH}_{4}

and minimum for

{CH}_{4}

CHXI11:THE P-BLOCK ELEMENTS

316298 Hydrides of germanium are called ____

1 Stannane

2 Plumbane

3 Germanes

4 Silane

CHXI11:THE P-BLOCK ELEMENTS

316294 Thiosulphate reacts differently with iodine and bromine in the reactions given below:
$2 S_{2} O_{3}^{2 -} + I_{2} \to S_{4} O_{6}^{2 -} + 2 I^{-}$
$S_{2} O_{3}^{2 -} + 5 {Br}_{2} + 5 H_{2} O \to 2 {SO}_{4}^{2 -} + 10 {Br}^{-} + 10 H^{+}$
Which of the following statement justifies the above dual behaviour of thiosulphate?

1 Bromine is a weaker oxidant than iodine.

2 Thiosulphate undergoes oxidation by bromine and reduction by iodine in these reactions.

3 Bromine undergoes oxidation and iodine undergoes reduction in these reactions.

4 Bromine is a stronger oxidant than iodine.

Explanation:

${Br}_{2}$ oxidises $S_{2} O_{3}^{2 -} (+ 2 O . S)$ to
${SO}_{4}^{2 -} (+ 6$ O.S. $)$ while $I_{2}$ oxidises
$S_{2} O_{3}^{2 -} (+ 2$ O.S $)$ to $S_{4} O_{6}^{2 -} (+ 2.5$ O.S. $)$ ,
hence ${Br}_{2}$ is stronger oxidant than iodine. So, the correct option is (4).

JEE Main - 2024

CHXI11:THE P-BLOCK ELEMENTS

316295 Assertion :
$F_{2}$ has high reactivity.
Reason :
$F - F$ bond has low bond dissociation enthalpy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

Explanation:

Fluorine is the most reactive among all the halogens due to its low bond dissociation enthalpy.Hence, both $A$ and $R$ are correct and Reason is the correct explanation of Assertion.

CHXI11:THE P-BLOCK ELEMENTS

316296 Assertion :
Trisilylamine is a relatively stronger base compared with trimethylamine.
Reason :
In trisilylamine, $N$ atom is $s p^{2}$ - hybridized and lone pair on $N$ is involved in back $π$ bonding

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI11:THE P-BLOCK ELEMENTS

316297 The reducing character of hydrides of group 14 elements is :

1 Maximum for

{CH}_{4}

and minimum for

{PbH}_{4}

2 Maximum for

{CH}_{4}

and minimum for

{SnH}_{4}

3 Maximum for

{PbH}_{4}

and minimum for

{SiH}_{4}

4 Maximum for

{PbH}_{4}

and minimum for

{CH}_{4}

CHXI11:THE P-BLOCK ELEMENTS

316298 Hydrides of germanium are called ____

1 Stannane

2 Plumbane

3 Germanes

4 Silane